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ASTM D4691-17 REDLINE
Standard Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry- 발행일 : 2017-06-01
- 발행기관 : ASTM
-
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상세정보
| 분야 | |
|---|---|
| 적용범위 | 1.1 This practice covers general considerations for the quantitative determination of elements in water and waste water by flame atomic absorption spectrophotometry. Flame atomic absorption spectrophotometry is simple, rapid, and applicable to a large number of elements in drinking water, surface waters, and domestic and industrial wastes. While some waters may be analyzed directly, others will require pretreatment. 1.2 Detection limits, sensitivity, and optimum ranges of the elements will vary with the various makes and models of satisfactory atomic absorption spectrometers. The actual concentration ranges measurable by direct aspiration are given in the specific test method for each element of interest. In the majority of instances the concentration range may be extended lower by use of electrothermal atomization and conversely extended upwards by using a less sensitive wavelength or rotating the burner head. Detection limits by direct aspiration may also be extended through sample concentration, solvent extraction techniques, or both. Where direct aspiration atomic absorption techniques do not provide adequate sensitivity, the analyst is referred to Practice D3919 or specialized procedures such as the gaseous hydride method for arsenic (Test Methods D2972) and selenium (Test Methods D3859), and the cold vapor technique for mercury (Test Method D3223). 1.3 Because of the differences among various makes and models of satisfactory instruments, no detailed operating instructions can be provided. Instead the analyst should follow the instructions provided by the manufacturer of a particular instrument. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversion to inch-pound units that are provided for information only and are not considered standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Section 9. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
| 국제분류(ICS)코드 | |
| 페이지수 | 8 |
| Edition | 17 |
이력정보
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ASTM D4691-17 REDLINE상세보기 | Standard Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry | 2017-06-01 | 표준 |
| 2 | ASTM D4691-17상세보기 | Standard Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry | 2017-06-01 | 표준 |
| 3 | ASTM D4691-11상세보기 | Standard Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry | 2011-09-01 | 구판 |
| 4 | ASTM D4691-02(2007)상세보기 | Standard Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry | 2007-06-15 | 구판 |
| 5 | ASTM D4691-96상세보기 | Standard Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry | 2002-01-10 | 구판 |
| 6 | ASTM D4691-02상세보기 | Standard Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry | 2002-01-10 | 구판 |
관련상품
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